/Engine/Plugins/Online/OnlineSubsystem/Source/Public/Interfaces/OnlineExternalUIInterface.h
virtual void TriggerOnLoginFlowUIRequiredDelegates ( const [FString](API\Runtime\Core\Containers\FString) & Param1, const [FOnLoginRedirectURL](API\Plugins\OnlineSubsystem\Interfaces\FOnLoginRedirectURL) & Param2, const [FOnLoginFlowComplete](API\Plugins\OnlineSubsystem\Interfaces\FOnLoginFlowComplete) & Param3, bool & Param4 )